‘Hybrid lighting guarantees high-quality tomatoes all year round’

‘Hybrid lighting guarantees high-quality tomatoes all year round’

A more generative plant, 10 to 12 % more production, and Brix measurements at summer levels all year round are the key results of ...
Silke Hemming: “The ultra-thin glass is so flexible that it looks like plastic film. The construction industry is also taking an interest.”

Ultra-thin glass: the way forward for the low-energy greenhouse?

Glass just 0.55 mm thick has been around for some time now. It’s on every mobile phone and tablet. It’s extremely light, strong and ...
Reducing water usage in Saudi Arabian horticulture

Reducing water usage in Saudi Arabian horticulture

There are major changes afoot in Saudi Arabia. One key strategy is to convert the country from an economy that is dependent on oil ...
“We fine-tune the amount of water to the plant’s energy supply”

“We fine-tune the amount of water to the plant’s energy supply”

In Next Generation Growing, everything revolves around the needs of the plant. In the past, much of the way growers controlled the climate was ...
New predatory bug limits establishment of Nesi in tomato

New predatory bug limits establishment of Nesi in tomato

Researchers have found three species of predatory bug in the Miridae family that can limit the establishment of the harmful predatory bug Nesidiocoris tenuis ...
‘We aim to grow the best basil in Europe’

‘We aim to grow the best basil in Europe’

Christ en Jacqueline Monden of De Kruidenaer in Etten-Leur had hybrid lighting installed in their new high-tech greenhouse, in which they grow basil, just ...
Fixed irrigation cycles are out, the plant itself tell us

Fixed irrigation cycles are out, the plant itself tell us

Higher lighting capacity, new diffuse glass types and intensive screening are developments that are having a major impact on irrigation strategies. Plants themselves can ...
Research sheds new light on raspberries and blackberries

Research sheds new light on raspberries and blackberries

Raspberries and blackberries are relatively new crops under glass, so knowledge in this area is as yet in very short supply. Woody small fruit ...
“Combination of breeding and production is key to success”

“Combination of breeding and production is key to success”

Despite having gained a growing reputation in the world of plant breeding over the years, cultivation of pot and bedding plants is still German ...
Rhizoctonia

Rhizoctonia

Rhizoctonia solani is a soil fungus with a wide host range and worldwide distribution. Host plants include almost all vegetables, flowers, shrubs and trees ...
LED light catching on in fruiting vegetable propagation

LED light catching on in fruiting vegetable propagation

Grow light has been widely used for propagating vegetable plants for many years. The tried-and-trusted fluorescent lights in climate cells and SON-T lights in ...
Tulip forcers can reduce transpiration without affecting quality

Tulip forcers can reduce transpiration without affecting quality

Stem topple is a serious problem in the flower bulb sector. Bent stems are unsaleable and are therefore something to avoid if at all ...
“We’re aiming for 5% higher yields with more and bigger fruits”

“We’re aiming for 5% higher yields with more and bigger fruits”

The roofs of many new greenhouses now contain glass with an anti-reflection (AR) coating, which improves light incidence. For a long time there was ...
When each leaf counts, leaf samples can point to plant’s needs

When each leaf counts, leaf samples can point to plant’s needs

It’s fine for a tomato plant to have a few spots on its leaves. But it’s a different matter when it comes to flowering ...
One drainage slit per plant distributes nutrients more evenly

One drainage slit per plant distributes nutrients more evenly

At the Greenway tomato nursery in De Lier, the Netherlands, each slab doesn’t have just one slit but two: one for each plant. A ...
Toine Overgaag: “Growing a new crop is a challenging opportunity. But we now produce some 2.8 million plants annually and rank among the top three growers in the western US.”

A new California

For years we would always tell our surprised guests that no, in fact, we don’t need artificial cooling to grow Phalaenopsis. “But doesn’t it ...
Dutch growers grow pink tomatoes in Azerbaijan for Russian market

Dutch growers grow pink tomatoes in Azerbaijan for Russian market

John and Jolanda van der Lee have swapped the Netherlands for Azerbaijan to run an 11 hectare tomato nursery there. Before they left, they ...
“Knowledge of soil organisms is key in ideal potting mixture”

“Knowledge of soil organisms is key in ideal potting mixture”

Bark, the main ingredient of orchid substrates, is steamed at high temperatures. This kills off all the impurities and pathogens. But unfortunately it also ...
Strap stacked pallets securely for stable transportation

Strap stacked pallets securely for stable transportation

At the end of the harvesting, sorting and packing process, the boxes or crates of products are stacked on pallets. It is important to ...
Multiple sensors and app shed more light on slab root environment

Multiple sensors and app shed more light on slab root environment

Snack tomato nursery Vitensa of Vierpolders, the Netherlands, uses a monitoring system with multiple wireless slab sensors in two of its greenhouse sections in ...
Chrysanthemum growers finally get thrips control back on track

Chrysanthemum growers finally get thrips control back on track

Dutch chrysanthemum growers are feeling quite optimistic about thrips control. After years of high pest pressure, growers are getting more adept at integrated pest ...
Emission-free growing on unbuffered coco with good results

Emission-free growing on unbuffered coco with good results

A consortium of companies is trialling and demonstrating a concept for emission-free growing at the Water Innovation and Demonstration Centre in Bleiswijk, the Netherlands ...
Herbert Stolker Senior Consultant Africa

I’ve seen the sun rise over Africa

There’s a Dutch song that starts with those words. When I’m at home in South Africa I see the sun literally rising over the ...
“We also need to continuously improve our efficiency through automation”

“We also need to continuously improve our efficiency through automation”

The Gartneriet PKM nursery was founded by Poul and Marie Madsen north of Odense, Denmark, in 1948. Since then, their son Kristian and their ...
Roger Abbenhuijs van Vakblad Onder Glas

Search for key to soil resilience is logical

Resilience is a growing trend, not only in the greenhouse horticulture sector but also in society as a whole. A survey on parents’ attitudes ...
Peter Goudswaard (left), Simon van Mourik and Bram van Rens (right)

Big data poised to navigate growers to their targets

With cultivation so closely intertwined with the Internet and with the advent of crop and climate sensors, big data is becoming available to the ...
Switchable optical filters: the future of greenhouse covering materials?

Switchable optical filters: the future of greenhouse covering materials?

One of the main tasks of the Smart Materials project was completed last year. Greenhouse simulation models were used to explore the potential effect ...
Education, business and research meet in challenging Dutch project

Education, business and research meet in challenging Dutch project

The World Horti Center was officially opened by Queen Máxima of the Netherlands in March 2018, although the building in the Dutch town of ...
“It’s all about the right balance between yield and fruit weight”

“It’s all about the right balance between yield and fruit weight”

Grow light is gaining ground among high-wire cucumber growers. Reijm & Zn in Berkel en Rodenrijs in the west of the Netherlands are among ...
Herbert Stolker Senior Consultant Africa

Making headway in East Africa

Unlike roses, the protected vegetable sector in Kenya is still quite small-scale. On a recent trip there I set out to find some larger ...